[Discuss-gnuradio] Two different "rxpath" in one top_block, how to switch between them when the program is running?

[shanki]

hi all,

   recently, i want to put two different "rxpath" in one top_block, and switch them when the program is running, but i failed :

 

class my_top_block(gr.top_block):
    def __init__(self, ......):
        gr.top_block.__init__(self)

        self.txpath = usrp_transmit_path.usrp_transmit_path(.....)
        self.rxpath = usrp_receive_path.usrp_receive_path(.....)

        self.connect(self.rxpath)
        self.connect(self.txpath)

.............

    if(......):

        tb.rxpath = usrp_another_rxpath(....) # usrp_receive_path() and usrp_another_rxpath have completely different blocks connected but the same "usrp_souce"

it seems that the "rxpath" can not be changed when the top_block is running, or maybe i did it in a wrong way, could anyone tell me how to do it right?( how and when to switch the two rxpath?)

    any help will be appreciated!

 sincerely,

shanki

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